The brief
- Constellation operates 55 GW of generating capacity from nuclear, natural gas, and renewables.
- Recent partnerships include Google (890 MW new nuclear capacity) and Amazon (190 MW expansion at Calvert Cliffs).
- The company operates the largest fleet of nuclear power plants in the United States and supplies data centers seeking 24/7 clean power.
Technical approach
Diverse generation mix
Constellation operates nuclear, natural gas, oil, geothermal, hydro, wind and solar plants, with nuclear providing the most reliable baseload power.
Restarting reactors for AI
Constellation restarts closed reactors and builds new units to supply data centers with reliable, zero-carbon power.
Power purchase agreements
Constellation signs long-term PPAs with hyperscalers to fund new capacity and upgrades.

